Doshi Evolution Monoblock Amplifier

A 160WPC, Stereophile Class A, KT150-Powered Masterpiece

Doshi’s Evolution Series Stereo Amplifier builds on Nick Doshi’s successful V3 design. It is a hybrid design with a solid state section based on a JFET differential amplifier which drives a tube-based output section built around EL-34/6CA7 tubes. This unusual topology is used to create an amplifier with real-world speaker drive capability of 65wpc while using only 2 gain stages and approximately 7db of feedback. The audio section is supported with a custom designed power transformer, regulated supplies, and an innovative output transformer with separate screen windings to give the Evolution its sweet effervescent sound. Inputs are Single Ended/Direct or XLR balanced via a differential-to-SE converter.

Power Supply

All Doshi Evolution series amplifiers feature comprehensively re-designed power supplies, the latest Clarity Cap Purity Series coupling capacitors, and re-designed audio circuit boards. Carried over from the V3 series are the stainless-steel chassis. Mechanical isolation is provided in the form of isolation grommets for the
audio circuit board, and mass damping of the chassis is achieved via the top plate. Outrigger legs add another layer of mechanical decoupling. The result is a chassis that is resistant to mechanical and air-borne energy, allowing the audio circuitry to function optimally.

Ready to hear Nick Doshi’s legendary amplifier designs with your own ears? Contact Linda and David now to schedule an audition at Florida’s Doshi dealer, Deep Dive Audio!